1. POWDERY MILDEW OF PEA
DR. RAJBIR SINGH
Assistant Professor
Department of Plant Pathology
Gochar Mahavidyalaya, Rampur Maniharan, Saharanpur (UP), India
Affiliated to Ch. Charan Singh University, Meerut (UP), India
Email: rajbir25805@yahoo.com, rajbirsingh2810@gmail.com
Cell No. 91-9456613374
2. Powdery Mildew of Pea
• All states in India where pea is grown
Symptoms
• Symptoms appear in dry season
• Firstly on old leaves and then others parts
• Formation of powder on both surface of leaves
• Later formation of powdery spots on tendrils, pod etc.
• White powder on plant surface
• Increase respiration and transpiration
• Decrease photosynthesis
• Spots on pod surface – grain small & shrinked - loss in yield
3.
4.
5.
6. Casual Organism – Erysiphe polygoni
• Pathogen survive in seed as mycelium
• Soil borne – Clestothecium
• Clestothecium - germinate & form conidia
• Superficial and ectophytic
• Second spread by air
7. Disease Management
• Selection of seed
• Removal of plant debrish
• Early sowing
• Seed treatment – Captan - @ 2.0 gm/ kg seed or Contaf @ 0. 1%
• Spray- (i) . Sulfex @ 2.5 gm/litre
(ii). Calaxin @ 1gm/litre
(iii). Kerathane 48 EC @ 225 ml/ha
• Disease resistant varieties- Pusa Panna, Arka Ajeet, Hans,
Azad pea 4